Calling WS Using Test Environment (Web
Services Navigator)
The Web Services Navigator of the SAP NetWeaver Application Server includes a test environment where you can call the programming interface.
To call the test interface, proceed as follows:
...
1. Call the Web Services Navigator.
More information: Opening Web Service Description in the Web Services Navigator (under Open Web Service Description in the Web Services Navigator).
2. Choose the operation that you would like to perform (for example Change).
You can now specify values for the attributes of the configuration object, which are available with the selected operations.

Note that the technical names of the attributes and attribute values are displayed or are required by the interface.
Note the information under Working with Complex Configuration Objects.